/* eslint-disable no-useless-return */
<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登陆表单区域 -->
            <el-form :model="loginForm" :rules="loginFormRule" ref="loginFormRef"  label-width="0px" class="login_form"  >
                <!-- 用户名 -->
                <el-form-item  prop="username">
                    <el-input v-model="loginForm.username"    prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item  prop="password">
                     <el-input v-model="loginForm.password"   prefix-icon="iconfont icon-3702mima" type="password" ></el-input>
                </el-form-item>
                <!-- 按钮 -->
                 <el-form-item class="btns" >
                     <el-button type="primary" @click="login">登陆</el-button>
                     <el-button type="info" @click="resetloginForm">重置</el-button>

                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登陆表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单验证规则
      loginFormRule: {
        // 验证用户名
        username: [
          { required: true, message: '输入登陆名称', trigger: 'blur' },
          { min: 2, max: 8, message: '长度在 2 到 8 个字符', trigger: 'blur' }
        ],
        // 验证密码
        password: [
          { required: true, message: '输入密码', trigger: 'blur' },
          { min: 3, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置按钮，重置登陆表单
    resetloginForm () {
      // console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        // console.log(valid)
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        // console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登陆失败！')
        this.$message.success('登陆成功')
        // 1、将登陆成功之后的token，保存到客户端的sessionstorage中
        // 1、1 项目中出现了登陆之外的其他API接口，必须在登陆之后才能访问到
        // 1、2 token 只应该在当前网站打开期间有效，所以必须将token保存在sessionStorage中
        // console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        // 2、通过编程式导航跳转到后台主页，路由地址是 /home
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>

.login_container{
    height: 100%;
    background-color: #2b4b6b;
}

.login_box{
    position: absolute;
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box{
        padding: 10px;
        height: 130px;
        width: 130px;
        border: 1px solid #eeeeee;
        border-radius: 50%;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
        // background-color: #fff;
        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
         }
    }
}
.btns{
    display: flex;
    justify-content:center ;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>
